Background Although millions or even billions of sperm are deposited in the female genital
tract, only very few sperm reach the oocyte, and only one single spermatozoon will …

In mammals, fertilization and early pre-implantation development occur in the oviduct.
Previous results obtained in our laboratory have identified specific molecules in the oviduct …

STUDY QUESTION Does the rapid transit through the uterine environment modulate the
sperm physiological state? SUMMARY ANSWER The uterosome-like vesicles (ULVs) …

Polyspermy is an important anomaly of fertilization in placental mammals, causing
premature death of the embryo. It is especially frequent under in vitro conditions …

Motility, acrosome reaction and oocyte fertilizing ability were assessed for bull spermatozoa
after incubation in regional (isthmic or ampullary), bovine oviductal fluid, pooled by stage of …

BACKGROUND Extracellular vesicles (EVs) are membrane-bound vesicles, found in
biofluids, that carry and transfer regulatory molecules, such as microRNAs (miRNAs) and …

The mammalian oviduct plays a key role in sperm storage, capacitation, and selection.
Specific oviduct secretions and/or binding to oviductal cells are thought to be responsible for …

Sperm binding to oviductal epithelium is thought to be an important mechanism regulating
sperm reservoir formation in the oviduct. On the basis of evidence in the hamster, we …

The possibility that differences in hormonal regimes between the two oviducts in the cow
around ovulation affects secretory activity of the oviduct epithelial cells and/or sperm–oviduct …

In contrast to man and many other mammalian species, conventional in vitro fertilization
(IVF) with horse gametes is not reliably successful. The apparent inability of stallion …